diff options
Diffstat (limited to 'arch/x86/machine/lapic.c')
| -rw-r--r-- | arch/x86/machine/lapic.c | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/arch/x86/machine/lapic.c b/arch/x86/machine/lapic.c index a978da1..444e661 100644 --- a/arch/x86/machine/lapic.c +++ b/arch/x86/machine/lapic.c @@ -1,5 +1,5 @@ /* - * Copyright (c) 2011-2014 Richard Braun. + * Copyright (c) 2011-2017 Richard Braun. * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -15,10 +15,12 @@ * along with this program. If not, see <http://www.gnu.org/licenses/>. */ +#include <stdbool.h> #include <stddef.h> #include <stdint.h> #include <stdio.h> +#include <kern/assert.h> #include <kern/init.h> #include <kern/macros.h> #include <kern/panic.h> @@ -182,6 +184,9 @@ static volatile struct lapic_map *lapic_map __read_mostly; */ static uint32_t lapic_bus_freq __read_mostly; +static bool lapic_initialized __initdata; +static bool lapic_is_unused __initdata; + static uint32_t lapic_read(const volatile struct lapic_register *r) { @@ -237,6 +242,20 @@ lapic_setup_registers(void) lapic_write(&lapic_map->timer_icr, lapic_bus_freq / HZ); } +bool __init +lapic_unused(void) +{ + assert(lapic_initialized); + return lapic_is_unused; +} + +void __init +lapic_setup_unused(void) +{ + lapic_initialized = true; + lapic_is_unused = true; +} + void __init lapic_setup(uint32_t map_addr) { @@ -256,6 +275,8 @@ lapic_setup(uint32_t map_addr) lapic_setup_registers(); lapic_setup_timer(); + + lapic_initialized = true; } void __init |